CN1801659B - Broadcasting terminal used for updating pilot channel information and method thereof - Google Patents
Broadcasting terminal used for updating pilot channel information and method thereof Download PDFInfo
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- CN1801659B CN1801659B CN2005101073918A CN200510107391A CN1801659B CN 1801659 B CN1801659 B CN 1801659B CN 2005101073918 A CN2005101073918 A CN 2005101073918A CN 200510107391 A CN200510107391 A CN 200510107391A CN 1801659 B CN1801659 B CN 1801659B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/74—Wireless systems of satellite networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/09—Arrangements for receiving desired information automatically according to timetables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/25—Arrangements for updating broadcast information or broadcast-related information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
Abstract
A method for updating pilot channel information of the satellite multimedia broadcasting terminal is provided, which includes: obtaining the first pilot channel information and storing, by determining whether pilot channel information which is obtained by the first and the second pilot channel information has changed, and if the pilot channel information has changed, the pilot channel information is updated by the first processor according to the second pilot channel information. Only when the pilot channel information has changed, the pilot channel information is updated by the second processor, thereby, processing of unchanged pilot channel information can be minimized and the efficiency of a system is enhanced.
Description
Background of invention
1. invention field
The present invention relates to a kind of broadcast terminal, more specifically, relate to a kind of terminal that is used to upgrade pilot channel, and method.
2. description of Related Art
Recently, the mobile communication terminal that has developed for example broadcast terminal, PDA (personal digital assistant) terminal or intelligent terminal to be providing different functions, and developed the digital multimedia broadcasting terminal of supporting to relate to audio frequency, video and data, services in the middle of them energetically.
For broadcast terminal, next DMB (DMB) terminal will be described as an example.
The DMB system allows the mobile subscriber by DMB terminal receiving multimedia information or data, and has developed into terrestrial DMB system and satellite dmb system respectively.The DMB service system is divided into an A of system, a Dh of system and the E of system, and wherein the E of system uses CDM (code division multiple access) method and is applied to satellite dmb.
Adopt the satellite dmb of CDM method can operate a satellite dmb terminal with CDM channel configuration information.In pilot frequency channel information, comprise the CDM channel configuration information.Pilot frequency channel information relates to the information about received signal analysis, spread signal synchronous detecting and receiver control, and the CDM channel configuration information.This channel information is sent to the satellite dmb terminal by pilot channel.Like this, if the satellite dmb terminal fails suitably to receive the pilot frequency channel information that is included in the pilot channel, it can not move.In addition,, must upgrade pilot channel, so that the satellite dmb terminal can receive broadcast service and operation rightly reposefully according to the pilot frequency channel information that changes if changed the pilot frequency channel information that is included in by in the pilot channel of broadcasting station transmission.
Therefore, when the first processor that is provided in satellite dmb receiving terminal place widely when each during cycle obtains pilot frequency channel information and it is offered second processor, the second update processor pilot frequency channel information.
Fig. 1 is the flow chart that explanation is used for the related art method flow process of the pilot frequency channel information of DMB terminal renewal via satellite.
As shown in Figure 1, when being provided with pilot frequency channel information cycle (step S11) and operation satellite dmb terminal (step S12), first processor obtains pilot frequency channel information (step S13).First processor obtains pilot frequency channel information and it is sent to second processor (step S14) at each during cycle.Second processor is checked the version number (step S15) of pilot frequency channel information, and if version number changed (step S16), the second update processor pilot frequency channel information (step 17).
That is, in the process of Fig. 1, whether the second processor inspection upgrades pilot frequency channel information according to the during cycle of pilot frequency channel information, and changes the second update processor pilot frequency channel information when version number.
Cycle by the second update processor pilot frequency channel information has and the relevant important technology meaning of system's actual characteristic.For example, first processor for the pilot frequency channel information processing unit situation that provides at present by Toshiba under, its obtain scope from least one super frame period (76.5ms) up to maximum 16 super frame period (1, pilot frequency channel information 224ms), and unconditionally it is sent to for example second processor of CPU (central processing unit), and do not consider its variation, to upgrade pilot frequency channel information.
Fig. 2 has shown the structure of the transmission of standard pilot channel.As shown in the figure, frame comprise have continuous content (ones) (11 ..., 1) pilot frequency code element (PS) and the significant pilot channel data part of Dns (D1～D51, n=1,2 ..., 51), and have the length of 12.75ms.For them, the payload data that comprises the actual information of actual pilot channel is D3-D22 and D27-D46, and other pilot channel data partly have particular value or check value (for example, Reed-Solomon code parity check bit).
6 frames have formed a superframe, and a superframe has the length of 76.5ms.Owing to transmitting pilot frequency channel information to second processor as the minimum period with this short relatively cycle, second processor must be carried out the process that receives pilot frequency channel information in each respective cycle, and it is compared with existing pilot frequency channel information, therefore increased its control burden.Promptly, even the input of process user simultaneously, carry out the operation relevant with user interface, or the required operation of processing broadcast reception machine operation, because second processor must receive pilot frequency channel information continuously and it is compared with existing information, it still needs to have the high-performance that can operate under higher relatively clock speed.Though except when when channel changes or broadcast operation changes according to the management of broadcasting service, pilot frequency channel information does not change, because pilot frequency channel information is prepreerence reference information in the DMB broadcast system, system should be constructed to being quick on the draw of changing.
As mentioned above, pilot frequency channel information, the prepreerence information of satellite dmb terminal correlation technique, be to obtain according to the relative short period of 1 superframe～16 superframes by the pilot frequency channel information processing unit, and offer second processor of satellite dmb terminal and do not consider any variation therein, then, second processor is by understanding new pilot frequency channel information, and whether the pilot frequency channel information of the current use of verification changes.When changing in pilot frequency channel information, second processor upgrades existing content at every turn in each cycle, the problem that has caused second processor operation burden to increase.
Summary of the invention
Therefore, a target of the present invention provides one and is used to upgrade the broadcast terminal that pilot frequency channel information can reduce CPU (central processing unit) operation burden, and method.
Another target of the present invention provides the broadcast terminal and the method thereof that are used to upgrade pilot frequency channel information, can allow to have only CPU renewal pilot frequency channel information when pilot frequency channel information upgrades.
Another target of the present invention provides one and is used to upgrade pilot frequency channel information, can bears CPU operation burden and only transmit the pilot frequency channel information that the changes broadcast terminal to CPU by allowing the pilot channel processing unit to determine whether pilot frequency channel information needs more to newly arrive, and method.
For the above-mentioned purpose of bottom line realization completely or partially, a kind of method that is used to upgrade the broadcast terminal pilot channel is provided, comprising: obtain and store first pilot frequency channel information by first processor; Obtain second pilot frequency channel information and determine according to first and second pilot frequency channel informations whether pilot frequency channel information changes by first processor; And if pilot frequency channel information changes, upgrade pilot frequency channel information according to second pilot frequency channel information by second processor.
Preferably, in whether definite pilot frequency channel information has changed step,, determine to need to change pilot frequency channel information if the version number of first and second pilot frequency channel informations is different.
For bottom line is completely or partially realized these advantages, a kind of broadcast terminal that is used to upgrade pilot frequency channel information further is provided, comprise: the first processor that is used for obtaining continuously pilot frequency channel information according to during cycle, determine whether pilot frequency channel information changes, if pilot frequency channel information changes, generate an interruption this information is sent to second processor, change pilot frequency channel information to allow second processor; And have only when pilot frequency channel information changes, second processor receives pilot frequency channel information from the pilot channel processing unit, and upgrades this pilot frequency channel information.
Preferably, first processor comprises: first memory when pilot frequency channel information changes, is used to store corresponding pilot frequency channel information version number; Second memory is used for when pilot frequency channel information changes, and storage is sent to the CDM channel configuration information of second processor, so that second processor can upgrade pilot frequency channel information; And controller, be used for the version number of current pilot channel information and early stage pilot frequency channel information version number compare, to determine by logical calculated whether pilot frequency channel information changes, if pilot frequency channel information changes, produce a CDM channel configuration information that interrupts and will be stored in the second memory and be sent to second processor, and the version number that controls the pilot frequency channel information that will change deposits in the first memory.
For whole or at least a portion realize these advantages, a digital multimedia broadcast receiver further is provided, comprising: first processor; And with second processor of first processor cooperation, wherein first processor is configured to carry out the following step, periodically receive the DMB pilot frequency channel information that comprises configuration information with the version number that is used for each code division multiplex channel, the current version that at least one is relevant with current reception pilot frequency channel information number previous versions relevant with the previous pilot frequency channel information that receives with at least one number compares, and relatively according to this, the configuration information that is included at least one the code division multiplex channel in the current reception pilot frequency channel information is sent to second processor, and wherein second processor is configured to according to the configuration information from the first processor reception, the renewal of combine digital multimedia broadcasting pilot frequency channel information.
To set forth other advantage of the present invention, purpose and feature to a certain extent in the following description, by consulting following content or passing through learning by doing of the present invention, these advantage purposes and feature will become apparent to a certain extent for the those skilled in the art of those this areas.As at length pointed in claims, can realize and obtain purpose of the present invention and advantage.
Description of drawings
Describe the present invention below with reference to the accompanying drawings in detail, wherein identical Reference numeral is represented identical element, wherein:
Fig. 1 is the flow chart that upgrades the process of pilot frequency channel information in satellite dmb terminal correlation technique;
Fig. 2 has illustrated the pilot channel transmission frame of satellite dmb terminal correlation technique;
Fig. 3 has illustrated and has been included in the interior CDM channel information frame of pilot frequency channel information and the structure of CDM channel configuration information field;
Fig. 4 has shown according to first processor structure of the present invention; And
Fig. 5 is according to the flow chart that upgrades the process of pilot frequency channel information in the broadcast terminal of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED
In broadcast terminal, realize the present invention, yet can be applied to the radio communications system operation according to different standards.Promptly, this broadcast terminal can be applied to any according to country or the different any system of area, and emission/receiving digital multimedia broadcast, DVB-H (digital video broadcast-handheld machine) medium-Flo (pure media forward link) or the like for example is to be applied to DMB (DMB) system.
Basic conception of the present invention is the efficient that improves communication system by the process that is minimized the same pilot channel information by CPU (central processing unit) renewal pilot frequency channel information by having only when pilot frequency channel information changes.
Referring now to accompanying drawing the preferred embodiments of the present invention are described.
Fig. 3 has illustrated the CDM channel information frame 10 that is included in the pilot frequency channel information, and the field structure that is included in the CDM channel configuration information 20 of each the CDM channel in this frame.
With reference to figure 3, with regard to the structure of CDM channel information frame 10, ten CDM channel specific configuration information parts 20 (being positioned at after the initial CDM channel number field) that comprise CDM channel number information are arranged to frame of formation.Each CDM channel configuration information 20 comprises 7 bytes.At length, each CDM channel configuration information comprises a 4-Bit Interleave pattern field (scale that interweaves that shows corresponding CDM channel), 4-bit rotary mode field (code rate that shows corresponding CDM channel convolutional code), 16-bit TSJD field (showing the transport stream identification symbol (transport_stream_id) that the CDM channel by correspondence is transmitted), 3-bit reserved field, 13-bit PID minimum value field (minimum value that shows the PID scope of TS (transport stream) grouping that transmits by the CDM channel of correspondence), 3-bit version field is (when upgrading, this value increases by 1), and 13-bit PID maximum field (maximum that shows the PID scope of the TS grouping that the CDM channel by correspondence transmits).
, point out when 3-bit version field is upgraded that its value increases by 1 herein.That is, it means when any information of pilot channel changes, and the value of version number field that belongs to the configuration information of certain the CDM channel with changing content increases by 1.Therefore, when obtaining pilot frequency channel information according to certain cycle, extraction is present in the value of 3-bit version field of certain position of each CDM channel configuration information 20, and its value with the CDM channel version number field of the CDM channel configuration information 20 in last cycle compared, thereby whether this pilot frequency channel information of verification all changes.Like this, need be used to carry out the first processor of this operation.
Fig. 4 has shown the demonstration structure according to the first processor of typical case's invention.
As shown in Figure 4, first processor 200 comprises first memory 210, is used to store pilot frequency channel information version number; Controller 230, be used for obtaining the pilot frequency channel information of reception and being used for deal with data according to the cycle, whether the value of the version number field of verification pilot frequency channel information changes, if and pilot frequency channel information need upgrade then produce one and interrupt and pilot frequency channel information is sent to second processor 300; And additional storage 220, be used for when controller 230 is handled pilot frequency channel information, storing the CDM channel configuration information 20 of each CDM channel that has obtained.
The operation of first processor 200 then will be described.
Because relatively having relatively large number at each cycle first processor 200 is difficult according to whole pilot frequency channel informations of amount, in correlation technique, periodically information is offered second processor that can the verification pilot channel whether have changed.Yet, relatively, in the present invention, only by simply relatively the field that comprises version number that on determining the position, exists CDM channel information frame 10 in come all changes in the whole pilot frequency channel informations of verification, feasiblely can realize the present invention by simple hardware or by the simple software program.That is, first processor 200, rather than second processor can determine whether pilot frequency channel information changes by hardware or by the counting circuit (being special-purpose ORing unit) with relative simple logic.That is, the pilot frequency channel information that second processor can use the method for interrupt procedure for example to accept to change is so that only in initial connection procedure and have only to upgrade when pilot frequency channel information changes and have content now.
Fig. 5 is the flow chart that upgrades the process of pilot frequency channel information in broadcast terminal according to the present invention.This flow chart is based on the operation of the first processor of broadcast terminal.
Referring now to Fig. 3 to 5 technical essential of the present invention is described.
In order normally to drive (operation) broadcast terminal, must obtain the CDM channel information that is included in the pilot frequency channel information.Like this, when the user passes through to the broadcast terminal energized (promptly, open) or by when the outlet terminal with complex functionality unit of supporting function of cellular phone selects the digital multimedia broadcasting signal receiving function to operate broadcast terminal, first processor 200 obtains first pilot frequency channel information (first information) from the pilot channel that is transmitted by the broadcasting station, and it is sent to second processor (step S110).Controller 230 is carried out data processing on the pilot frequency channel information that obtains, extracting the CDM channel configuration information of each CDM channel, and they are stored in the second memory 220.In addition, controller 230 obtains the value corresponding to the version number of each CDM channel (front page this shop), and they are stored in (step S120) in the first memory 210.
After this, when first processor 200 according to previous certain cycle that is provided with of user (for example, the cycle of any amount superframe or by cycle of ISP's appointment) obtain pilot frequency channel information (second information) (step S130) corresponding to next cycle, controller 230 is gone up at the pilot frequency channel information that obtains (second information) and is carried out data processing, and the CDM channel configuration information that each obtains is stored in the second memory 220.Controller 230 extracts version number (second edition this shop) value from each CDM channel configuration information, and by (for example carrying out internal calculation, XOR) it is compared with the value of version number in early stage (front page this shop) in being stored in first memory 210, whether have identical value (step S160) to check them.If the value of version number (first and second version numbers) is inequality, if promptly version number changes, controller 230 determines will need to upgrade pilot frequency channel information (step 162).
Then, controller 230 produces an interruption (or carry out other proper procedure), and each CDM channel configuration information that will be stored in the second memory 220 is sent to second processor (step S164), and the value of the version number (second edition this shop) that changes is stored in the first memory 210 (step S166).
Subsequently, controller upgrades pilot frequency channel information (step S168) by using the CDM channel configuration information that receives from first processor 200.This process is repeatedly carried out in the first processor 200 that obtains pilot frequency channel information according to during cycle, and has only when the version number 25 of each CDM channel configuration information 20 changes, and second processor 300 upgrades pilot frequency channel information.In this case, if for a certain reason, 300 requests of second processor are from the pilot frequency channel information of pilot frequency channel information processing unit 200, so that improve the utilization (step S140) of pilot frequency channel information, first processor 200 unconditionally provides nearest pilot frequency channel information to second processor 300, and do not consider whether this pilot frequency channel information has changed, and second processor 300 upgrades this pilot frequency channel information (step S150).
The invention provides a kind of digital multimedia broadcast receiver, comprising: first processor; With with second processor of first processor cooperation, wherein first processor is configured to carry out the following step, periodically receive the DMB pilot frequency channel information that comprises configuration information with the version number that is used for each code division multiplex channel, the current version that at least one is relevant with current reception pilot frequency channel information number previous versions relevant with the previous pilot frequency channel information that receives with at least one number compares, and relatively according to this, the configuration information that is included at least one the code division multiplex channel in the current reception pilot frequency channel information is sent to second processor, and wherein second processor is configured to according to the configuration information from the first processor reception, the renewal of combine digital multimedia broadcasting pilot frequency channel information.
Here, first and second processors can be used to receiving digital multimedia broadcast via satellite.This pilot frequency channel information can periodically receive according to the cycle by the first processor setting.Can in code division multiplex channel information frame, indicate version number.If at least one current version number is different from least one previous versions number, can carry out forwarding step.When the second processor request is included in code division multiplex channel configuration information in the pilot frequency channel information of current reception, can carries out forwarding step, and need not to consider the result of comparison step.
As description up to the present, the broadcast terminal and the method thereof that are used to upgrade channel information have many advantages.
That is to say, for example, the first processor of this broadcast terminal is received in the pilot frequency channel information in certain cycle, obtain the version number field value of CDM channel configuration information of each CDM channel of the CDM channel information frame that is included in pilot channel, the version number field value of the same field of obtaining in the cycle is formerly compared, have only this pilot frequency channel information of second processor of notification broadcast terminal when detecting variation to change, and corresponding information is provided, so that second processor can upgrade this pilot frequency channel information.
Therefore, unnecessarily operation under need be the very not little situation of second processor in the possibility that those pilot frequency channel informations upgrade, and like this, can reduce the operation burden of second processor.In addition, because the handling rate and the performance of second processor can reduce, cost and power loss can reduce, and the burden of design operation program can reduce significantly like this.
The foregoing description and advantage only are exemplary, and should not be construed as restriction the present invention.Current instruction can easily be applied to the device of other types.Description of the invention is intended that illustrative, rather than limits the scope of this claim.For those this areas professional and technical personnel, many alternatives, modifications and variations will be conspicuous.In the claims, it is to be used for protecting the conduct of describing herein to realize the structure of cited function that device adds the function clause, and is not only structural equivalence, and is the structure of equivalence.
Claims (18)
1. method that is used to upgrade the pilot frequency channel information of broadcast terminal comprises:
Obtain and store first pilot frequency channel information by first processor;
Obtain second pilot frequency channel information by first processor, and determine according to first and second pilot frequency channel informations that obtain whether pilot frequency channel information changes; And
If pilot frequency channel information changes, according to second pilot frequency channel information by the second update processor pilot frequency channel information.
2. obtain first and second pilot frequency channel informations continuously according to the cycle that the process of claim 1 wherein according to the previous setting of first processor.
3. according to the process of claim 1 wherein the variation that compares to determine this pilot frequency channel information by version number with the version number of second pilot frequency channel information and first pilot frequency channel information.
4. according to the method for claim 3, wherein in determining the step that pilot frequency channel information changes, if version number's difference of first and second pilot frequency channel informations, determining need the change pilot frequency channel information.
5. according to the method for claim 1, further comprise:
When pilot frequency channel information changes, store the version number of second pilot frequency channel information by first processor.
6. according to the method for claim 5, wherein the version number of second pilot frequency channel information is stored in the first memory of first processor.
7. according to the method for claim 6, wherein first memory separates with second memory, and the second memory storage is included in the code division multiplex channel configuration information of each the code division multiplex channel in second pilot frequency channel information.
8. according to the method for claim 6, wherein after first processor obtains the 3rd pilot signal channel information, version number by second pilot frequency channel information that will store compares with the version number of the 3rd pilot signal channel information, determines whether pilot frequency channel information changes.
9. according to the method for claim 1, further comprise:
When the second processor request pilot frequency channel information, receive pilot frequency channel information by second processor from first processor, and carry out thereon and upgrade, and do not consider whether pilot frequency channel information changes.
10. according to the method for claim 3, wherein first processor obtains pilot frequency channel information and checks the version number of this pilot frequency channel information, if the version number of this pilot frequency channel information and previous versions are number different, first processor produces an interruption to transmit this pilot frequency channel information to second processor.
11. according to the method for claim 10, wherein pilot frequency channel information is the code division multiplex channel configuration information of having been handled by first processor.
12. the method according to claim 3 further comprises:
When the second processor request pilot frequency channel information, receive pilot frequency channel information by second processor from first processor, and carry out thereon and upgrade, and do not consider whether pilot frequency channel information changes.
13. a digital multimedia broadcast receiver comprises:
First processor; And
With second processor of first processor cooperation, wherein first processor is configured to carry out the following step,
Receiving digital multimedia broadcastinging pilot frequency channel information periodically, it comprises the configuration information with the version number that is used for each code division multiplex channel,
The previous version number that the version number that at least one is relevant with the pilot frequency channel information of current reception is relevant with the previous pilot frequency channel information that receives with at least one compares, and
According to this configuration information that relatively sends at least one the code division multiplex channel in the pilot frequency channel information that is included in current reception to second processor, and
Wherein second processor is configured to the renewal according to the configuration information combine digital multimedia broadcasting pilot frequency channel information that receives from first processor.
14. according to the receiver of claim 13, wherein first and second processors can be used for receiving digital multimedia broadcast via satellite.
15. according to the receiver of claim 13, wherein this pilot frequency channel information can periodically receive according to the cycle by the first processor setting.
16., wherein can in code division multiplex channel information frame, indicate version number according to the receiver of claim 13.
17.,, can carry out forwarding step if wherein at least one current version number is different from least one previous versions number according to the receiver of claim 13.
18. according to the receiver of claim 13, wherein during the code division multiplex channel configuration information in the second processor request is included in the pilot frequency channel information of current reception, do not consider the result of this comparison step, carry out this forwarding step.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20040092842A KR100664178B1 (en) | 2004-11-13 | 2004-11-13 | Channel information update method for digital multimedia broadcasting receiver |
| KR10-2004-0092842 | 2004-11-13 | ||
| KR1020040092842 | 2004-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1801659A CN1801659A (en) | 2006-07-12 |
| CN1801659B true CN1801659B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005101073918A Expired - Fee Related CN1801659B (en) | 2004-11-13 | 2005-11-14 | Broadcasting terminal used for updating pilot channel information and method thereof |
Country Status (5)
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| US (1) | US7778216B2 (en) |
| EP (1) | EP1657837B1 (en) |
| JP (1) | JP4459891B2 (en) |
| KR (1) | KR100664178B1 (en) |
| CN (1) | CN1801659B (en) |
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| JP3688959B2 (en) | 1999-11-29 | 2005-08-31 | 株式会社東芝 | Packet transmission system |
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| EP1150443A3 (en) * | 2000-04-26 | 2003-11-05 | Alcatel | Integrated multispot satellite communication system in a multimedia broadcasting network |
| JP3499502B2 (en) * | 2000-04-28 | 2004-02-23 | 株式会社ケンウッド | Digital broadcast receiving apparatus and search method therefor |
| JP3534243B2 (en) * | 2000-05-23 | 2004-06-07 | 日本電気株式会社 | Cell flow control method and method using back pressure in ATM switch with square lattice expansion |
| US7162732B2 (en) * | 2001-03-27 | 2007-01-09 | Intel Corporation | System and related methods facilitating the detection and acquisition of a data channel in a cable modem |
| KR100442621B1 (en) * | 2001-06-29 | 2004-08-02 | 삼성전자주식회사 | Methode for transmitting information of high speed packet data access service in cdma mobile communication system |
| US20030048753A1 (en) * | 2001-08-30 | 2003-03-13 | Ahmad Jalali | Method and apparatus for multi-path elimination in a wireless communication system |
| FR2839403A1 (en) * | 2002-05-03 | 2003-11-07 | France Telecom | METHOD FOR DYNAMIC MULTIPLEXING OF DIGITAL FLOWS, SIGNAL DYNAMIC MULTIPLEXING DEVICE AND CORRESPONDING RECEIVER |
| JP2004112239A (en) | 2002-09-17 | 2004-04-08 | Sharp Corp | Broadcast receiver, broadcast transmitter, and broadcasting system |
| US7418064B2 (en) * | 2003-02-18 | 2008-08-26 | Qualcomm, Incorporated | Systems and methods for hierarchically demodulating and decoding a data signal using a pilot signal and an additional signal |
| KR100546371B1 (en) * | 2003-08-27 | 2006-01-26 | 삼성전자주식회사 | Multiple multimedia data receiving and saving apparatus including transport stream demultiplexing unit and conditional access/content protection unit |
| KR20050036526A (en) * | 2003-10-16 | 2005-04-20 | 삼성전자주식회사 | Transport stream, apparatus and method for providing value added service during channel changing time in a digital multimedia broadcasting system and mobile terminal equipment capable of displaying the digital multimedia broadcasting |
| KR20050038143A (en) * | 2003-10-21 | 2005-04-27 | 삼성전자주식회사 | Digital broadcasting system and method for providing a specific broadcasting information classified by area |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0961513A2 (en) * | 1998-05-29 | 1999-12-01 | Lucent Technologies Inc. | Wireless CDMA system having a unique forward configuration control channel |
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| JP4459891B2 (en) | 2010-04-28 |
| US20060104236A1 (en) | 2006-05-18 |
| US7778216B2 (en) | 2010-08-17 |
| KR20060053059A (en) | 2006-05-19 |
| KR100664178B1 (en) | 2007-01-04 |
| JP2006174427A (en) | 2006-06-29 |
| EP1657837B1 (en) | 2012-07-11 |
| EP1657837A1 (en) | 2006-05-17 |
| CN1801659A (en) | 2006-07-12 |
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